You may want to double-check your plan to ensure you're not on Business or Pro. If you are indeed on the Enterprise plan, information about your account manager and contact plans should have been in the onboarding PowerPoint they serve as part of the setup. If you don't have that, I'd follow the instructions in https://developers.cloudflare.com/support/troubleshooting/ge...
I'd also consider opening a ticket asking about your account manager.